Revise about: and chrome: url handling.

chrome/browser/ui/webui/devtools_ui.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/devtools_ui.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager_backend.h"
@@ skipping 29 matching lines @@
 };
 
 
 DevToolsDataSource::DevToolsDataSource()
     : DataSource(chrome::kChromeUIDevToolsHost, NULL) {
 }
 
 void DevToolsDataSource::StartDataRequest(const std::string& path,
                                           bool is_incognito,
                                           int request_id) {
+  if (path.empty()) {
+    SendResponse(request_id, NULL);
+    return;
+  }
+
   std::string filename = PathWithoutParams(path);
 
   int resource_id = -1;
   for (size_t i = 0; i < kDevtoolsResourcesSize; ++i) {
     if (filename == kDevtoolsResources[i].name) {
       resource_id = kDevtoolsResources[i].value;
       break;
     }
   }
 
@@ skipping 12 matching lines @@
     return "text/html";
   } else if (EndsWith(filename, ".css", false)) {
     return "text/css";
   } else if (EndsWith(filename, ".js", false)) {
     return "application/javascript";
   } else if (EndsWith(filename, ".png", false)) {
     return "image/png";
   } else if (EndsWith(filename, ".gif", false)) {
     return "image/gif";
   }
-  NOTREACHED();
   return "text/plain";
 }
 
 // static
 void DevToolsUI::RegisterDevToolsDataSource() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   static bool registered = false;
   if (!registered) {
     DevToolsDataSource* data_source = new DevToolsDataSource();
     ChromeURLRequestContext* context = static_cast<ChromeURLRequestContext*>(
         Profile::GetDefaultRequestContext()->GetURLRequestContext());
     context->chrome_url_data_manager_backend()->AddDataSource(data_source);
     registered = true;
   }
 }
 
 DevToolsUI::DevToolsUI(TabContents* contents) : WebUI(contents) {
   DevToolsDataSource* data_source = new DevToolsDataSource();
   contents->profile()->GetChromeURLDataManager()->AddDataSource(data_source);
 }
 
 void DevToolsUI::RenderViewCreated(RenderViewHost* render_view_host) {
   render_view_host->Send(new DevToolsMsg_SetupDevToolsClient(
       render_view_host->routing_id()));
 }